Using Regular Expression Validation

[Coleen]

I can't remember the correct way to write a custom regular expression validator, and the help file for VB.net is not terribly helpful...it does not give any real world examples. I've got the main syntax of ^[a-zA-z] but I can't remember how to write the next portion. I need to validate passwords...the y must start with a letter of the alphabet, can contain 0-9 and can contain the special characters @#$%&, I just can't remember the correct syntax to write this as a regular expression validation.
Is it ^[a-zA-z]|[a-zA-Z0-9@#$%&] ? I'm not certain about the special characters, they can be in any order as long as the first character is a letter.

Any help/suggestions are greatly appreciated.

TIA, Coleen

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[Peter Blum]

Re: Using Regular Expression Validation

That looks very good for someone who cannot remember Regexes :)

Here's a resource I like for figuring out regexes:

http://devedge.netscape.com/library/manuals/2000/javascript/1.5/reference/regexp.html#1193136

The only question I would have is whether you have a minimum size. In that
case, replace the ? with a {min, max} like {4, 20}.

Also add the '$' to the end.

--- Peter Blum

https://www.PeterBlum.com

Email: PLBlum@PeterBlu m.com
Creator of "Profession al Validation And More" at

http://www.peterblum.com/vam/home.aspx

<Coleen> wrote in message news:u7mee5%23I EHA.1192@TK2MSF TNGP11.phx.gbl. ..[color=blue]
> I can't remember the correct way to write a custom regular expression[/color]
validator, and the help file for VB.net is not terribly helpful...it does
not give any real world examples. I've got the main syntax of ^[a-zA-z] but
I can't remember how to write the next portion. I need to validate
passwords...the y must start with a letter of the alphabet, can contain 0-9
and can contain the special characters @#$%&, I just can't remember the
correct syntax to write this as a regular expression validation.[color=blue]
> Is it ^[a-zA-z]|[a-zA-Z0-9@#$%&] ? I'm not certain about the special[/color]
characters, they can be in any order as long as the first character is a
letter.[color=blue]
>
> Any help/suggestions are greatly appreciated.
>
> TIA, Coleen
>
> ---
> Posted using Wimdows.net NntpNews Component -
>
> Post Made from http://www.DotNetJunkies.com/newsgroups Our newsgroup[/color]
engine supports Post Alerts, Ratings, and Searching.

[Coleen]

Re: Using Regular Expression Validation

Thanks :-) I took it in class, but it's been months since I've used it, so
I'm not certain it will do everything I need. I do need to check it for
length, thanks very much for the suggestion and link. I appreciate it :-)
"Peter Blum" <PLBlum@Blum.in fo> wrote in message
news:eBtsflMJEH A.1224@TK2MSFTN GP11.phx.gbl...[color=blue]
> That looks very good for someone who cannot remember Regexes :)
>
> Here's a resource I like for figuring out regexes:
>[/color]
http://devedge.netscape.com/library/...p.html#1193136[color=blue]
>
> The only question I would have is whether you have a minimum size. In that
> case, replace the ? with a {min, max} like {4, 20}.
>
> Also add the '$' to the end.
>
> --- Peter Blum
> www.PeterBlum.com
> Email: PLBlum@PeterBlu m.com
> Creator of "Profession al Validation And More" at
> http://www.peterblum.com/vam/home.aspx
>
> <Coleen> wrote in message news:u7mee5%23I EHA.1192@TK2MSF TNGP11.phx.gbl. ..[color=green]
> > I can't remember the correct way to write a custom regular expression[/color]
> validator, and the help file for VB.net is not terribly helpful...it does
> not give any real world examples. I've got the main syntax of ^[a-zA-z][/color]
but[color=blue]
> I can't remember how to write the next portion. I need to validate
> passwords...the y must start with a letter of the alphabet, can contain 0-9
> and can contain the special characters @#$%&, I just can't remember the
> correct syntax to write this as a regular expression validation.[color=green]
> > Is it ^[a-zA-z]|[a-zA-Z0-9@#$%&] ? I'm not certain about the special[/color]
> characters, they can be in any order as long as the first character is a
> letter.[color=green]
> >
> > Any help/suggestions are greatly appreciated.
> >
> > TIA, Coleen
> >
> > ---
> > Posted using Wimdows.net NntpNews Component -
> >
> > Post Made from http://www.DotNetJunkies.com/newsgroups Our newsgroup[/color]
> engine supports Post Alerts, Ratings, and Searching.
>
>[/color]